| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Emmett | 1 | 9,128 | 7,734 | 2.56% | 3,130 | 3 | City |
Emmett is the largest city in Gem County, with a population of 9,128.
Emmett is the smallest city in Gem County, with a population of 9,128.
There is 1 city in Gem County, Idaho.